poky.yaml.in: increase minimum RAM from 8 to 32

In the light of the recent LLVM addition, and other such heavier
recipes, increase the minimum RAM requirement from 8Gb to 32Gb.

(From yocto-docs rev: 459d461f1edebd65319e8b13386ab81b1bfcaeb0)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
(cherry picked from commit 3055affc8a37a40d03206140e47caf3d1437ec35)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

documentation/poky.yaml.in

@@ -32,4 +32,4 @@ MIN_DISK_SPACE : "90"
 # Disk space (Gbytes) needed to generate qemux86-64 core-image-sato on Ubuntu 22.04 (x86-64) with "rm_work", rounded up from 38
 MIN_DISK_SPACE_RM_WORK : "40"
 # RAM (Gbytes) needed to generate qemux86-64 core-image-sato on Ubuntu 22.04 (x86-64) on a 4 core system
-MIN_RAM : "8"
+MIN_RAM : "32"